Lumber-drier.



ri. GLADY. LUMBER DRIER. APPLIGATON FILED' MAR. a, 1909.

Patented Sept. 14, 1909.

LOUIS, MISSOURI.

nonnen-narnia.

Specification of Letters Patent.

"Patented sept. it; roos.;

Applicjation filed March 8, 1909. Serial No. 482,073.

il all vwhom it moi-y concern.:

ile it known that l, HENRY G. CADY, a cit' en of the United States, residing at St. Louis, in the ed certain new andfnseful Improvements in Lui'i1be1-Drie1-s, of which the foliowingis s specification. f

My invention lrelates to improvements in lumber 'drier-s, and the object of my invention'is the provision of lumber drier in which fuiste or exhaust steam is used in connection with suitable meansand in which a thorough, eiiicient, and practical drying of the'lul'noer isinsured. 1

To attain the desired object, the invention consists of a lumber drier embodying novel tentures of construction and combination of parte for service substantially asA disclscd. herein. .l

lu order that the construction in dittaii and the operation and advantages of my system may be fully understood and appreciated, invite attention tothe accompanying drmvings. v Figure l, represents a longitudinal sectional 'view of 'the drying house With the apparatus for drying shown in side eleva.- tion. Fig. 'represents' a longitudinal sectionoi View oif-the drying apparatus on a largo scale, and, ;F ig. 3, represents a trousverse sectional view on the line Fig. 2.

ln 'the drawings: A, designates the drying' heuse winch preferably consists of two compartments or chambers B, and C, prov/ith access doors l), suitably located,'

vided and the outer or side wallsare preferably pf 'ied with an interposed heet retaining .inserirli il'. l,

Leading from the compartments or chombors B, und C, tre the short 'hot air conducting pipes l? and said pipes being coupled to :toren communication with the hot air supply pipe H. The pipe H, leeds from the fon J, and the casing of the fan receives the hot oir feed pipe K,`said pipe communicatin' directly with the appare-tus.

rho drying apparatus consists of a longitudinel zcz'ising L, divided into the steam chambersA M, and the hot air chambers N, said steam chambers communichting through State of llf'iissourhlmve inventthe medium of openings or passages O, and the steam entering the top chamber through the pipe P. I also provide the removable casings'Q, atene-h end of the apparatus.

From the foregoing description taken in connection with the drawings, the operation of my drier will be readily understood, and the steam enters the casing at 'the upper steam chamber M. through the pipe P, and passes :in zigzag fashion through the .cries of chambers heating the air in the hot air chambers N, which hot air is taken through the pipe K, and by means ofthe fan forced through the pipe H, to the drying chambers thus in a simple, inexpensive. and practicai manner. the drying is eiiected.

I havcstated that'niy drier is used. in the drying of lumber, but it is evident that it muy bensed tor drying fruit, or for any other purposewhere it could be etiieiently employed.

l. claim:

l. In e device of the character described, an air heater comprising a, series of hollow rectangular. prisi-ns spaced apart, passages 'connecting the same at alternate ends,meons 'connecting the ladjacent longitudinal edges oi the prisms and making an air tight joint therewith, seid means 'and the adjacent faces of the prisms forming an open endedy chamber therebetween, cesings slidabiy secured to alternate prisms at opposite ends and affording zigzag communication between the chambers, means-for introducingsteem into lthe upper-most prism and for leading it from the' undermost, 'and vmeans for causing a current of .tir to enter the bottom chamber and ,pass through the intermediate chambers and out o't the uppermost. 4 l

2: in a heater, a series of casingsforming chambers, longitudinal means making air tight joints with the casings inserted therebetween' and forming open-ended chambers or spaces between the casings, tubes passing vertically through said spaces and connecting adjacent chambers at alternate ends, a steam inlet pipe enterinof the uppermost chamber, e steam outlet pipe for the lower-` most, closures for the spaces between the chambexfssiidably seouredto alternate caslnss amongst@ mossel@ @lesiiresfbems S0 constructed and arranged esto pmmtJ the aint/0 pass aroun' date easing, one end. of the basal Spacebeng left open tovpermit .air to enter said spaces,

permost space for causing the cicuation of en through sald spaces.

the end of thel interme.

fand `means having connection with the up' In testmo whereof I axixiy signatore, 

